Patents Examined by Helen M. S. Sneed
  • Patent number: 6613799
    Abstract: New derivatives of platinum (II) complex are herein provided, which are liposoluble and applicable as antimicrobial agents and anticancer agents specific to the affected parts of patients and selectively transferred to the parts if they are used in combination with a contrast medium such as lipiodol, the derivatives being represented by the following general formula: (wherein R1 and R2 may be identical or different with each other and represent an ammine optionally substituted with an organic substituent and they may be bonded together through a bivalent organic group and R3 is a saturated or unsaturated higher fatty acid, these derivatives being prepared by nitrifying a cis-dichloro-di-(substituted or unsubstituted)-ammine platinum (II) and then reacting the resulting aqua type product with a corresponding alkali metal salt of higher fatty acid.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: September 2, 2003
    Assignee: Sumitomo Pharmaceuticals Company Ltd.
    Inventors: Mitsuaki Maeda, Takuma Sasaki
  • Patent number: 5420370
    Abstract: Discussed is a process for preventing clathrate hydrate masses from impeding the flow of fluid in a fluid system. An additive is contacted with clathrate hydrate masses in the system to prevent those clathrate hydrate masses from impeding fluid flow. The process is particularly useful in the natural gas and petroleum production, transportation and processing industry where gas hydrate formation can cause serious problems. Additives preferably contain one or more five member and/or six member cyclic chemical groupings. Additives include poly(N-vinyl-2-pyrrolidone) and hydroxyethylcellulose, either in combination or alone.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: May 30, 1995
    Assignee: Colorado School of Mines
    Inventor: Earle D. Sloan, Jr.
  • Patent number: 5414182
    Abstract: The process for activating a catalytic composition for paraffin dehydrogenation containing gallium, alumina, possibly silica and/or one or more alkaline or alkaline-earth metals, comprises thermal activation in air followed by post-activation effected by the following stages:oxidation with air and/or oxygen or a mixture containing oxygen and inert gas;purging with inert gas;reduction with hydrogen or a mixture of hydrogen and an inert or reducing gas.The catalytic composition activated by said process contains gallium, alumina, silica and possibly one or more alkaline or alkaline-earth metals, the alumina being in .delta. or .theta. phase or in .delta.+.theta. or .delta.+.theta.+.alpha. phase mixture.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: May 9, 1995
    Assignees: Snamprogetti S.p.A., Eniricerche S.p.A.
    Inventors: Rodolfo Iezzi, Andrea Bartolini, Franco Buonomo
  • Patent number: 5413979
    Abstract: The invention relates to a method for the preparation of a solid procatalyst composition for a catalyst system intended for the polymerization of olefins, wherein a magnesium halide, such as magnesium chloride, is dissolved and/or slurried in a mono-carboxylic acid alkyl ester, such as ethyl acetate, is impregnated into a support material, dried, treated with an organometallic compound or a silicon compound and thereafter with a transition metal compound. The invention also relates to such a procatalyst composition and its use together with a cocatalyst for the polymerization of olefins. According to the invention it has been possible to increase the activity of the catalyst composition by using a silanated support material, such as silanated silica, which is then treated with an organometallic or silicon compound before treatment with a transition metal compound. The silanated silica is preferably a silicon dioxide which has been heat-treated at 1000.degree.-200.degree.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: May 9, 1995
    Assignee: Borealis Holding A/S
    Inventors: Arja Kostiainen, Bill Gustafsson, Pekka Sormunen
  • Patent number: 5414178
    Abstract: A catalyst system composition and a process to prepare a catalyst composition comprising a cobalt compound, a metal alkyl and a coordinating compound is provided. The resultant catalyst system composition can be used to dimerize ethylene with high productivity to butenes and high selectivity to 1-butene.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: May 9, 1995
    Assignee: Phillips Petroleum Company
    Inventor: An-hsiang Wu
  • Patent number: 5406017
    Abstract: A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700.degree. to 1200.degree. C. A preferred catalyst comprises an alkali component associated with a support material. Results obtained over alkali-promoted solids are enhanced when the contacting is conducted in the presence of halogen promoters.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: April 11, 1995
    Assignee: Atlantic Richfield Company
    Inventor: Howard P. Withers, Jr.
  • Patent number: 5405819
    Abstract: A Phillips catalyst for the polymerization of .alpha.-olefins, containing, as a catalytically active component, at least one chromium(III) compound on a silicon aluminum phosphate carrier of the general formula (I)(Si.sub.x Al.sub.y P.sub.z)O.sub.2 (I)where x is from 0.05 to 0.5 and y and z are each from 0.1 to 1.0, exhibits in particular high productivity and is preferably used for the preparation of homo- and copolymers of ethylene.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: April 11, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Mueller, Hans-Georg Braun, Bernd L. Marczinke, Ulrich Mueller
  • Patent number: 5403803
    Abstract: In accordance with this invention, there is provided a living carbocationic polymerization catalyst system comprising: (1) a halide of titanium, tin, vanadium or antimony; (2) an aluminum halide selected from the group consisting of aralkyl aluminum halides and alkyl aluminum halides; and (3) an initiator selected from the group consisting of tertiary alkyl halides, tertiary aralkyl halides, tertiary polymeric halides, and water provided that if the initiator is organic, a proton scavenger is present, or, alternatively, if the initiator consists of water, a secondary or tertiary amine is present. Another aspect of the invention comprises a process for using this catalyst system for the polymerization of olefins and for producing narrow molecular weight distribution polymers in a short reaction time.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: April 4, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Timothy D. Shaffer, John R. Ashbaugh
  • Patent number: 5401392
    Abstract: For removing mercury and any arsenic in hydrocarbon charges containing mercury and sulfur, the charge is contacted with an arsenic collecting material having catalytic properties ("catalyst") in hydrogen, the material containing at least one metal selected from the group consisting of nickel, cobalt, iron, palladium, and platinum; at least one metal selected from the group consisting of chromium, molybdenum, tungsten, and uranium; and an active phase carrier. Downstream of the catalyst or mixed therewith is a mercury collecting material containing a sulfide of at least one metal selected from the group consisting of copper, iron, and silver or sulfur, and an active phase carrier.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: March 28, 1995
    Assignee: Institut Francais du Petrole
    Inventors: Philippe Courty, Pierre Dufresne, Jean P. Boitiaux, Germain Martino
  • Patent number: 5401393
    Abstract: A method is disclosed for synthesizing a reactive sulfur-containing adsorbent material for removing metals, preferably mercury, from hydrocarbon fluids. The method includes impregnating a porous polystyrene resin with elemental sulfur, and heating the impregnated resin/sulfur mixture to chemically fix the sulfur to the resin. The elemental sulfur may be in solid, liquid, or vapor phase under conditions of contact with the resin. Also disclosed is the reactive adsorbent synthesized by this method. Also, a process is disclosed for removing mercury from hydrocarbon fluids by using a reactive adsorbent of the invention.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: March 28, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Darrell D. Whitehurst, Tsoung Y. Yan
  • Patent number: 5401891
    Abstract: A process for purifying crude dicyclopentadiene which comprises the steps of: cracking the crude dicyclopentadiene to form a monomeric-containing effluent which comprises at least one monomer selected from the group consisting of: C.sub.4 acyclic dienes, C.sub.5 acyclic dienes, cyclopentadiene and methylcyclopentadiene; separating the monomeric-containing effluent into a cyclopentadiene-enriched stream and a cyclopentadiene-poor stream; dimerizing the cyclopentadiene-enriched stream to form a dimerizer effluent; contacting a membrane separator under pervaporation conditions with the dimerizer effluent wherein the C.sub.4 acyclic dienes, C.sub.5 acyclic dienes and cyclopentadiene permeate through the membrane separator and wherein a dicyclopentadiene product having a purity of at least about 98% is retained as retentate.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: March 28, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael J. Keenan, David W. Sharp, Robert C. Schucker
  • Patent number: 5401388
    Abstract: A process combination is disclosed to selectively upgrade naphtha to obtain gasoline which is in accordance with current standards for reformulated fuels. A naphtha feedstock is fractionated to selectively direct light naphtha to isomerization or blending, a head-cut fraction to reforming, and a heavy potion to selective isoparaffin synthesis to yield light and heavy synthesis naphtha and isobutane. The heavy potion of the synthesis naphtha is processed by reforming. Light naphtha may be isomerized, with or without recycle of low-octane components of the product. A gasoline component is blended from light, synthesis, and reformate products from the process combination.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: March 28, 1995
    Assignee: UOP
    Inventors: Robert J. Schmidt, Michael B. Russ, Paula L. Bogdan, R. Joe Lawson, Norman L. Gilsdorf
  • Patent number: 5401385
    Abstract: A process combination is disclosed to selectively upgrade catalytically cracked gasoline to obtain products suitable for further upgrading to reformulated fuels. A naphtha feedstock, preferably heavy naphtha, is hydrogenated to saturate aromatics, followed by selective isoparaffin synthesis to yield light and heavy synthesis naphtha and isobutane. The heavy synthesis naphtha may be processed by reforming, light naphtha may be isomerized, and isobutane may be upgraded by dehydrogenation, etherification and/or alkylation to yield gasoline components from the process combination suitable for production of reformulated gasoline.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: March 28, 1995
    Assignee: UOP
    Inventors: Robert J. Schmidt, Paula L. Bogdan, R. Joe Lawson, J. W. Adriaan Sachtler
  • Patent number: 5401893
    Abstract: This invention deals with a process for converting aliphatic C.sub.2 -C.sub.6 hydrocarbons into C.sub.6.sup.+ aromatics and C.sub.3.sup.= /C.sub.4.sup.= olefins. The process involves combining dehydrocyclodimerization (DHCD) with dehydrogenation. Thus, the feedstream is first sent to a DHCD zone which produces an effluent stream which contains C.sub.6.sup.+ aromatics along with C.sub.1 -C.sub.5 hydrocarbons. This effluent stream is separated into a stream containing C.sub.1 -C.sub.4 hydrocarbons and one containing C.sub.6.sup.+ aromatics. The C.sub.1 -C.sub.4 containing stream is flowed to a dehydrogenation zone to produce C.sub.3.sup.= /C.sub.4.sup.= olefins.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: March 28, 1995
    Assignee: UOP
    Inventors: Christopher D. Gosling, Joseph H. Gregor, Charles P. Luebke
  • Patent number: 5397757
    Abstract: The invention relates to a catalyst composition for ethylene polymerization which comprises (1) a metallocene complex, (2) carbon tetrachloride or carbon tetrabromide, (3) an organomagnesium compound, (4) trimethylaluminum.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: March 14, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Robert I. Mink, Yury V. Kissin
  • Patent number: 5397496
    Abstract: A composition for treating oversprayed paints that contains an effective amount of a carbonyl compound such as alcohol esters and condensation products of alcohol esters and carboxylic acid in water together with a suitable surfactant. The carbonyl compound is capable of dissolving paint while remaining non-reactive with water. The alcohol ester employed has the general formula: ##STR1## The alcohol ester derivative employed has the general formula: ##STR2## R' and R" are a substituted or unsubstituted linear alkyl group containing 1 to 8 carbon atoms, R and R"' are linear or branched alkyl groups containing 1 to 10 carbon atoms, and R and R"' are either identical or different alkyl functionalities.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: March 14, 1995
    Assignee: Nortru, Inc.
    Inventors: Edwin C. Zuerner, Robert A. Patzelt, Norman Foster
  • Patent number: 5395513
    Abstract: A continuous process for upgrading reformate feedstock or the like to reduce benzene content and increase octane fuel rating. The improved process comprises maintaining a fluidized bed of regenerable acid solid medium pore zeolite catalyst particles in a turbulent regime reaction zone, preferably maintained with a superficial gas velocity of 0.1 to 1 meter/sec. with reformate feedstock being introduced at a bottom portion of the reaction zone at a weight hourly space velocity (WHSV) of 0.1 to 5, based on active catalyst solids; reaction zone total pressure being less than 2000 kPa. The preferred catalyst particles have an average particle size of 20 to 100 microns (.mu.), with about 10 to 25% of the catalyst particles comprising fine particles having a particle size less than 30 microns; and the preferred zeolite catalyst comprises shape selective medium pore aluminosilicate zeolite having a constraint index of 1 to 12. The benzene is reacted by contacting reformate feedstock, such as C.sub.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: March 7, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Arthur A. Chin, Mohsen N. Harandi, Karen M. Millane, Robert A. Ware, James S. Warwick
  • Patent number: 5396020
    Abstract: A process to separate at least two classes of hydrocarbons of a solution using an aryl-bridged polysilsesquioxane adsorbent has been developed. The classes of hydrocarbons to be separated may be saturated hydrocarbons, unsaturated aliphatic hydrocarbons and aromatic hydrocarbons. The aryl-bridging group may be phenylene, diphenylene, terphenylene, or anthrylene. A specific embodiment of the invention is one where the components of a solution of aromatic, unsaturated aliphatic, and saturated hydrocarbons are separated into an aromatic hydrocarbon portion, an unsaturated aliphatic hydrocarbon portion, and a saturated hydrocarbon portion where the adsorbent is an aryl-bridged polysilsesquioxane.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: March 7, 1995
    Assignee: UOP
    Inventor: James R. Lansbarkis
  • Patent number: 5396011
    Abstract: An aromatic compound (such as benzene) is alkylated with a alkene (such as propylene) by contacting the two compounds together in the presence of a tungsten on zirconia catalyst. The reaction preferably takes place at elevated temperature and elevated pressure. The process of the invention has very high selectivity and conversion, and produces no or only very low amounts of undesirable oligomers (as measured by bromine number).
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: March 7, 1995
    Assignee: Mallinckrodt Chemical, Inc.
    Inventor: Deborah K. Kuhn
  • Patent number: 5396012
    Abstract: Process for the preparation of monoisopropylnaphthalene by alkylation of naphthalene with the aid of zeolites of the faujasite type as catalysts, wherein the cations of the zeolites have been replaced by alkaline earth metal ions.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: March 7, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Marita Neuber, Udo Dettmeier, Ernst I. Leupold